O Levels Physics (5054)•5054/12/M/J/18

Explanation
Linear relationship between resistance and temperature
Steps:
- Resistance increases uniformly, so R is linear with temperature t: R = a + b t.
- Use table values to find slope b = ΔR / Δt.
- Calculate intercept a using one point: a = R - b t.
- Solve for t when R=160: t = (160 - a) / b.
Not enough information: The table of R values is missing, preventing calculation of the linear fit.
Why B is correct:
- Cannot verify without table data.
Why the others are wrong:
- A: Cannot verify without table data.
- C: Cannot verify without table data.
- D: Cannot verify without table data.
Final answer: Not enough information.
Topic: Resistance
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